CN212954584U

CN212954584U - Skid-mounted coal bed gas extraction water purification device

Info

Publication number: CN212954584U
Application number: CN201922398469.6U
Authority: CN
Inventors: 沈玉龙
Original assignee: Shanghai Zhongmao Environmental Protection Engineering Co ltd
Current assignee: Shanghai Zhongmao Environmental Protection Engineering Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2021-04-13
Anticipated expiration: 2029-12-27

Abstract

The utility model discloses a skid-mounted coal bed gas produced water purification device, which comprises a raw water tank for storing raw water, wherein the bottom of the raw water tank pumps the raw water to a two-stage filter through a raw water pump; the liquid filtered by the two-stage filter is communicated with a precision filter through a first liquid conveying pipe; the second liquid conveying pipe is communicated with the salt box and conveys the filtrate to the salt box; the precision filter is communicated with the reverse osmosis device through a liquid conveying pipe and a high-pressure pump; the water purified by the reverse osmosis device is stored by a pure water tank; the two-stage filter, the salt box, the precision filter, the high-pressure pump and the reverse osmosis device are arranged on the skid-mounted chassis; the container also comprises a container body which contains the two-stage filter, the salt box, the precision filter, the high-pressure pump and the reverse osmosis device and is matched with the skid-mounted chassis. Harmful soluble solids, bacteria, viruses and the like can be removed through the design of the purification system. The desalination rate reaches more than 99.6 percent, and water meeting the national standard is discharged.

Description

Skid-mounted coal bed gas extraction water purification device

Technical Field

The utility model discloses a sled dress formula coal bed gas extraction water purification installation belongs to purifier technical field.

Background

The hydraulic fracturing technology is widely used for oil and gas exploitation, the flow conductivity of an oil-gas layer can be improved through hydraulic fracturing so as to achieve the purpose of increasing the yield, and meanwhile, a large amount of fracturing fluid can be caused to flow back to the ground. Along with the continuous development of oil fields in China, the discharge capacity of fracturing flowback fluid of oil-gas wells is continuously increased.

The fracturing flow-back fluid contains various chemical additives in the original fracturing fluid, and also contains suspended organic impurities, phenols, aldehydes and other pollutants due to long-time contact with the stratum. The fracturing flowback fluid has the characteristics of high viscosity, large emulsification degree, high chemical oxygen demand, high total suspended matter content and complex water quality, and can cause huge damage to underground water, surface water and soil and even directly or indirectly threaten human health if being directly discharged without reasonable treatment.

The purpose of the fracturing flow-back fluid treatment is divided into drainage, reuse and reinjection, the drainage water quality index is large, and the treatment difficulty is the greatest. Therefore, the purification technology with higher economic efficiency for the standard reinjection of the fracturing flow-back fluid is developed, and the purification technology has great significance for protecting the environment and developing the society.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a sled dress formula coal bed gas produces water purification installation to solve prior art's above-mentioned technical problem.

The purpose of the utility model is realized by the following technical scheme.

A skid-mounted coal bed gas produced water purification device comprises a raw water tank for storing raw water, wherein the bottom of the raw water tank pumps the raw water to a two-stage filter through a raw water pump; the liquid filtered by the two-stage filter is communicated with a precision filter through a first liquid conveying pipe; the second liquid conveying pipe is communicated with the salt box and conveys the filtrate to the salt box; the precision filter is communicated with the reverse osmosis device through a liquid conveying pipe and a high-pressure pump; the water purified by the reverse osmosis device is stored by a pure water tank; the two-stage filter, the salt box, the precision filter, the high-pressure pump and the reverse osmosis device are arranged on the skid-mounted chassis; the container also comprises a container body which contains the two-stage filter, the salt box, the precision filter, the high-pressure pump and the reverse osmosis device and is matched with the skid-mounted chassis.

The two-stage filter is a sand filter and a carbon filter in sequence.

The filter material in the sand filter is PPE, AC coconut carbon and the like.

The filtering pore size of the precision filter is 4-5 microns.

The aperture of the reverse osmosis membrane in the reverse osmosis device is only 0.0001 micron.

And a low-voltage switch is arranged between the high-pressure pump and the precision filter.

Through the utility model relates to a purifier that forms has following technological effect:

1. harmful soluble solids, bacteria, viruses and the like can be removed through the design of the purification system. The desalination rate reaches more than 99.6 percent, and water meeting the national standard is discharged.

2. The device is suitable for purifying and discharging waste water of medium petroleum coal bed gas and deep wells of oil and gas fields, and is also suitable for treating and purifying electronics, medicines, foods, chemical industry, power plants, communities, seawater and the like.

3. The skid-mounted design is convenient to move.

Drawings

Fig. 1 is a schematic structural view of the present invention;

in the figure, 1, a raw water tank; 2. a raw water pump; 3. sand filter, 4, carbon filter; 5. a salt box; 6, a precision filter; 7. a high pressure pump; 8. a reverse osmosis unit; 9. pure water tank.

Detailed Description

The structure of the present invention will be further explained with reference to the accompanying drawings and specific embodiments;

as shown in fig. 1, the skid-mounted coal bed gas produced water purification device comprises a raw water tank for storing raw water, wherein the bottom of the raw water tank pumps the raw water to a two-stage filter through a raw water pump; the liquid filtered by the two-stage filter is communicated with a precision filter through a first liquid conveying pipe; the second liquid conveying pipe is communicated with the salt box and conveys the filtrate to the salt box; the precision filter is communicated with the reverse osmosis device through a liquid conveying pipe and a high-pressure pump; the water purified by the reverse osmosis device is stored by a pure water tank; the two-stage filter, the salt box, the precision filter, the high-pressure pump and the reverse osmosis device are arranged on the skid-mounted chassis; the container also comprises a container body which contains the two-stage filter, the salt box, the precision filter, the high-pressure pump and the reverse osmosis device and is matched with the skid-mounted chassis.

The two-stage filter is a sand filter and a carbon filter in sequence.

The filter material in the sand filter is PPE, AC coconut carbon and the like.

The filtering pore size of the precision filter is 4-5 microns.

The purification device process flow is described as follows:

the first-stage pretreatment system: the carbon sand multi-medium filtration is adopted, and the main purpose is to remove substances harmful to human bodies, such as silt, manganese, rust, colloidal substances, mechanical impurities, suspended substances and the like which are contained in water and have the particle size of more than 20 UM. The automatic filtering system adopts an import Ricek controller, and can automatically perform a series of operations such as positive flushing, back flushing and the like. Meanwhile, the equipment is provided with a self-maintenance system, and the running cost is low. The filter material mainly includes: PPE, AC coconut charcoal, and the like.

A second-stage pretreatment system: the activated carbon is adopted for filtering, so that pigment, peculiar smell and a large amount of biochemical organic matters in the water are removed, and the residual chlorine value, pesticide pollution and other pollutants harmful to human bodies in the water are reduced.

The third stage of pretreatment system: the water is further purified by adopting a precision filter with the aperture of 5 microns, so that the turbidity and the chromaticity of the water are optimized, and the water inlet requirement of an RO system is ensured.

The host portion includes: a security filter, a high-pressure water pump and a reverse osmosis membrane. The cartridge filter is the above fourth stage pretreatment system, and the high pressure water pump is one of the core devices on the main machine, and provides enough pressure for the reverse osmosis membrane element to overcome the osmotic pressure and the running resistance, so that the rated water yield of the device is met.

The host system of the purification device adopts reverse osmosis technology to carry out desalination treatment, the aperture of the reverse osmosis membrane is only 0.0001 micron, and harmful soluble solids, bacteria, viruses and the like can be removed. The desalination rate reaches more than 99.6 percent, and water meeting the national standard is discharged.

Claims

1. The utility model provides a sled dress formula coal bed gas produced water purifier which characterized in that: the system comprises a raw water tank for storing raw water, wherein the bottom of the raw water tank pumps the raw water to a two-stage filter through a raw water pump; the liquid filtered by the two-stage filter is communicated with a precision filter through a first liquid conveying pipe; the second liquid conveying pipe is communicated with the salt box and conveys the filtrate to the salt box; the precision filter is communicated with the reverse osmosis device through a liquid conveying pipe and a high-pressure pump; the water purified by the reverse osmosis device is stored by a pure water tank; the two-stage filter, the salt box, the precision filter, the high-pressure pump and the reverse osmosis device are arranged on the skid-mounted chassis; the container also comprises a container body which contains the two-stage filter, the salt box, the precision filter, the high-pressure pump and the reverse osmosis device and is matched with the skid-mounted chassis.

2. The skid-mounted coal bed gas produced water purification device of claim 1, which is characterized in that: the two-stage filter is a sand filter and a carbon filter in sequence.

3. The skid-mounted coal bed gas produced water purification device according to claim 2, characterized in that: the filter material in the sand filter is PPE or AC coconut carbon.

4. The skid-mounted coal bed gas produced water purification device of claim 1, which is characterized in that: the filtering pore size of the precision filter is 4-5 microns.

5. The skid-mounted coal bed gas produced water purification device of claim 1, which is characterized in that: the aperture of the reverse osmosis membrane in the reverse osmosis device is only 0.0001 micron.

6. The skid-mounted coal bed gas produced water purification device of claim 1, which is characterized in that: and a low-voltage switch is arranged between the high-pressure pump and the precision filter.